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Article

The Effect of Reduced Design Margin on the Fire Survivability of ASME Code Propane Tanks

[+] Author and Article Information
A. M. Birk

Department of Mechanical and Materials Engineering, Queen’s University, Kingston, Ontario K7L 3N6, Canada

J. Pressure Vessel Technol 127(1), 55-60 (Mar 15, 2005) (6 pages) doi:10.1115/1.1845476 History: Received February 26, 2004; Revised August 30, 2004; Online March 15, 2005
Copyright © 2005 by ASME
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References

Birk,  A. M., and Cunningham,  M. H., 1994, “The Boiling Liquid Expanding Vapor Explosion,” Bull. Int. Acad. Sci. Cracovie, 7(6), pp. 474–480.
Anderson, C., and Norris, E. B., 1974, “Fragmentation and Metallurgical Analysis of Tank Car RAX 201,” FRA-OR&D 75-30, US Federal Railroad Administration, Washington DC.
Birk,  A. M., 2003, “A Study of the Fire Survivability of Steel and Aluminum 33.5 lb Propane Cylinders,” J. Appl. Fire Sci., 10(3), pp. 215–235.
Nakos, J. T., and Keltner, N. R., 1989, “The Radiative-Convective Partitioning of Heat Transfer to Structures in Large Pool Fires,” 1989 ASME National Heat Transfer Conference, HTD-Vol 106.
Birk,  A. M., 1988, “Modelling the Response of Tankers Exposed to External Fire Impingement,” J. Hazard. Mater., 20, pp. 197–225.
Townsend,  W., Anderson,  C., Zook,  J., and Cowgill,  G., 1974, “Comparison of Thermally Coated and Uninsulated Rail Tank Cars Filled with LPG Subjected to a Fire Environment,” US DOT Report No. FRA-OR&D 75-32, Washington DC.
Birk,  A. M., VanderSteen,  J. D. J, Davison,  C. R., Cunningham,  M. H., and Mirzazedeh,  I., 2003, “PRV Field Trials—The Effects of Fire Conditions and PRV Blowdown on Propane Tank Survivability in a Fire,” Transport Canada Report TP 14045E.
Pierorazio, A. J., and Birk, A. M., 1998, “Air Test of Commercially Available Transport Vessel PRVs,” Proceedings of the 1998 ASME/JSME Joint Pressure Vessels and Piping Conference, San Diego, California.

Figures

Grahic Jump Location
Approximate properties of SA 455 steel (scaled from σult vs T data from TC 128 tank-car steel, 2)
Grahic Jump Location
Predicted pressure vs time (500 gallon ASME code tank, fully engulfing fire, blackbody fire T=871°C, tank surface emissivity=0.9, initial fill 80%, initial T=20°C, PRV set to 1.72 MPa, PRV capacity 1.23 m3/s at 120% of set P)
Grahic Jump Location
Predicted vapor space wall T vs time (500 gallon ASME code tank, fully engulfing fire, blackbody fire T=871°C, tank surface emissivity=0.9, initial fill 80%, initial T=20°C, PRV set to 1.72 MPa, PRV capacity 1.23 m3/s at 120% of set P)
Grahic Jump Location
Predicted lading mass vs time (500 gallon ASME code tank, fully engulfing fire, blackbody fire T=871°C, tank surface emissivity=0.9, initial fill 80%, initial T=20°C, PRV set to 1.72 MPa, PRV capacity 1.23 m3/s at 120% of set P)
Grahic Jump Location
Predicted factor of safety vs time (7.7 mm wall, 500 gallon ASME code tank, fully engulfing fire, blackbody fire T=871°C, tank surface emissivity=0.9, initial fill 80%, initial T=20°C, PRV set to 1.72 MPa, PRV capacity 1.23 m3/s at 120% of set P)
Grahic Jump Location
Predicted factor of safety vs time (7.1 mm wall, 500 gallon ASME code tank, fully engulfing fire, blackbody fire T=871°C, tank surface emissivity=0.9, initial fill 80%, initial T=20°C, PRV set to 1.72 MPa, PRV capacity 1.23 m3/s at 120% of set P)

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